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jaywcjlove avatar jaywcjlove commented on May 27, 2024 1

@fjqingyou Upgrade v8.5.5

from province-city-china.

fjqingyou avatar fjqingyou commented on May 27, 2024

如果是在 nodejs 环境下倒是可以用

export class Test{
    protected provinceObj : globalThis.ProvinceCityChina.Province | null = null;
}

这种方式声明,不过这样它就附带了个 globalThis 的前缀,会降低代码的移植性。请问是否有更合适的使用方式?

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jaywcjlove avatar jaywcjlove commented on May 27, 2024

@fjqingyou 我测试下来没有问题呢。

image

没有默认到出方法,需要下面方式导入包?

import data from 'province-city-china'
import dataCity from  'province-city-china/dist/city.json'

image

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fjqingyou avatar fjqingyou commented on May 27, 2024

通过调用推导类型是正常的可以得到目标类型的。

不过如果不是赋值形式,而是声明某个变量是什么类型的变量时。

例如:
let province : ProvinceCityChina.Province;//只声明,还不赋值

只声明一个变量以及它的类型,但是具体的值还未确定,需要后续逻辑进一步计算才能得到真正的值。

那么它就不属于推导性质可知的类型,而 ProvinceCityChina.Province 这个类型是未导出的!

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jaywcjlove avatar jaywcjlove commented on May 27, 2024

@fjqingyou Upgrade v8.5.2

import { City } from 'province-city-china'

import type ProvinceCityChina from '@province-city-china/types'

const data: Partial<City> = { code: '12', name: 'dsfsdf'}
const dt: Partial<ProvinceCityChina.Area> = {}

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fjqingyou avatar fjqingyou commented on May 27, 2024

我在 vscode 中新建了一个 Test.ts ,复制了这个例子后,似乎并未按预期工作。是否是我的用法错误?

image

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jaywcjlove avatar jaywcjlove commented on May 27, 2024

@fjqingyou Upgrade v8.5.4, 找到原因了,修复了。

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fjqingyou avatar fjqingyou commented on May 27, 2024

已经按预期工作,感谢!

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fjqingyou avatar fjqingyou commented on May 27, 2024

@jaywcjlove 似乎 Country 类型的并未被导出?

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fjqingyou avatar fjqingyou commented on May 27, 2024

@jaywcjlove 它正常工作了!感谢!

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